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• A visual data browser to display GIS coverages <br />• A web-based database interface to allow Internet users access to the DSS database <br />The main components are supported by DMIs that take data from the database and reformat it for <br />models and specific data products, such as GIS coverages and river network diagrams. The <br />entire systems for the CRDSS and the RGDSS are documented and are accessible via the <br />Internet. <br />1.4.4.2 Modifications May be Required for the SPDSS. As indicated above, an <br />objective of this Feasibility Study is to ensure that the tools developed for CGDSS and RGDSS <br />are used to the extent possible in SPDSS in order to improve the cost-effectiveness of SPDSS <br />tool development and future CDSS maintenance. This should be possible in large measure <br />because the CRDSS and the RGDSS were developed as data-centered decision support systems <br />and, consequently, it should be possible with few or minimal changes to utilize many of the <br />components of the CRDSS, and the more recent RGDSS, in development of the SPDSS. <br />There are, however, important differences between the South Platte River, Colorado River, and <br />the Rio Grande basins that will require modification of some of the components from the CRDSS <br />and RGDSS before application in the SPDSS. Paramount among these differences is the much <br />larger population in the South Platte River basin. Population data for 1999 indicate the counties <br />composing the Rio Grande basin have a population of 48,173, while the counties composing the <br />South Platte River basin have 2,855,181 (Colorado Department of Local Affairs 2001). This <br />difference in population provides indication of the greater competition for municipal and <br />industrial water supply from both groundwater and surface water sources in the South Platte <br />River basin. <br />1.5 LIST OF KEY REPORTS AND INDIVIDUALS INTERVIEWED <br />Throughout the Feasibility Study, efforts were made to maximize the use of previous reports and <br />existing data to help define the SPDSS needs. A literature search was performed for publications <br />and databases relevant to the study, including those available from the State of Colorado, <br />Northern Colorado Water Conservancy District, Denver Water, Groundwater Appropriators for <br />the South Platte, Colorado State University and the United States Geological Survey. The most <br />relevant publications were obtained and reviewed. A list of publications reviewed is presented in <br />references sections within each chapter. <br />Personal and telephone interviews were held from September 2000 to February 2001 with key <br />South Platte River basin water users and managers in order to gather information about the water <br />user needs for a DSS in the South Platte River basin. This process resulted in 35 entities (72 <br />individuals) being interviewed for the Feasibility Study. These meetings and contacts are listed <br />in Table A-1 of Appendix A. In addition, three SPDSS Advisory Committee meetings were held <br />in Loveland, Fort Morgan, and Denver, Colorado. SPDSS Advisory Committee members are <br />listed in Table A-2 of Appendix A. The results of these meetings and interviews are discussed <br />further in Chapter 2, Needs Assessment. <br />p:data\gen\spdss\final report\chapter l.doc 1-1 1 <br />October 31, 2001 <br />